Spring-wheel.



P. t A. DE BOGORY.

SPRING WHEEL.

APPLICATION FILED June, 1911.

31mm tow www Patented Sept. 3, 1912.

1.59, x www* wth/wenas UNITED sTATEs :PATENT oEEioE.

mocos. DE noeonr AND ALEXANDER DE BoGoRY, or cocoANU'r GROVE, FLonmA.

siEnuff-WHEEL.`

Specification of Letters vPatent.

Application led January 26, 1911.

Patented Sept. 3, 1912.

Serial No. 604,898.

T o all whom it may concern Be it known that we, Piiocon DE Boooar and ALEXANDER DE BoooRY, citizens of the United States, residing at Cocoanut Grove, in the county of'Dade and State of Florida, have invented certain new and useful Improverneiits in S ring-Wheels, of which the following is a ull and exact description, reference being had to the accompanying drawings.

Our invention relates to vehicle spring wheels, having resilient rim, flat spring spokes and a hub with two solid flaiiges on it.

The object Iof our invention is to construct a wheel, which will be resilient vertically and rigid laterally, and in case of breakage easy to repair.

1n the accompanying drawin Figure 1 is a side elevation of a portion o our wheel, parts being shown in section; Fig. 2, a longitudinal section of the hub, with a portion of the spoke ready to be inserted between the flanges; Fig. 8, a longitudinal section of the hub, with a spoke inserted between the. a side elevation of a por.

flanges; Fig. 3 tion of the hub; Figs. 4, and 5 are cross sections of our spokes on line e, f, Fig. 1; Fig. 6, a portion of one of the inside springs 5, which are placed between the strips of belting 4, to reinforce the rim Fig. 1; Fig. 7, a longitudinal section and side elevation of the bushing, by means of which pins of 'the spokes are secured between the flanges of the hub; and Fig.,9, a view of a portion of spring from the inside of the rim (looking from the center of the wheel).

Similar letters refer to similar parts throughout the several views.

Practice shows that a wheel of that kind, to be resilient must have very thin spokes, which are easily dented at the edges and do not make a wheel rigid enough laterally; to avoid this difficulty and increase the lateral ri ldity of the wheel:

I. Vel make our spokes ver thin in the middle and thicker at the e ges. Fig. 4 shows the spokes made out of fiat strips of metal with their edges doubled. Fig. 5 represents a spoke made out of a strip of metal, which is thinner in the middle part of it than at the edges.

II. Spokes are made wider at the hub, than at the rim Fig. 8.

III. Each s oke is made in a combination 0f three distinct opposite curves, having such a shape, that when they are placed oppositely in the wheel,-each spoke will be touched and bracedby adjoining spokes in three places, Fig. l-where they may be fastened together, making the wheel still more rigid in lateral direction.

IIII, Pins which connect s okes to the hub are made extra long an stout, with shoulders rojectin on each side of the spokes, an' are w ded, braced or riveted solid to the spokes, so that there is no chance for the spoke to connecting pin, Figs. 2 and 8.

We have adopted a resilient rim in our wheel and to make it perfectly safe in hard usage on rough roads we construct it out of the most tou h material obtainable as: rubber belting, eather belting, or canvas belting, or some other tough material. We .use several layers of this belting 4 in the construction of our rim and reinforce these belts with fiat, .thin metal sprin v5, which are placed between each layer o belting as shown in Figs. 1 and 8. The belting and metal 4springs we prefer to be endless, but th? could be used in sections if so desired.

-i 2 and 8, show that the hub of our whee is provided with two solid flanges 17 and 18, with holes in them 15* and 1 5 to receive the pins of the spokes 13, one' of these flanges 18, have the holes 15 of the saine diameter, as the pins 13 have, which must be insertedin themwhile the diameter of the holes 15, in the flange 17, are a great deal larger, than the diameter of the pins 13 and these large holes are fitted with bushings 12, Figs. 7 and 8, the inside diameter of which 14, just fit the pins 13. The hub is provided also with a disk 11, which is placed against the flange 17, Figs. 2 and `8.

Fig. -nirepre'sents a side elevation of a 'portion of the hub, with a portion of the disk 11 broke ofi'; and shows, that the disk 11 is provided with holes, which are slightly larger in diameter than the holes of the flange 17, but have common centers with tlieni, so that the holes of the disk could be placed right against the holes of the flange Figs. 2 and 3, and in such position of t e disk, bushing 12 can be inserted, or removed fiom the flan e; when the bushing 12 is removed from t e flange the spoke 2, also in a case of breakage, could be easily removed and a new one inserted between the flanges, as shown=on the Fig. 2. When the susY iio

spoke 2 is placed between the anges, pin

13 will be in a hole 15, and the pin 13 will be in a center of a large hole 15 to secure this pin in the center of the hole, bushing l2 must be inserted and the disk 11 move( so that the center of the holes of the disk 11 will be exactly between the centers of the holes of the ilange Figs. 1 and 8. In such a position of the disk 11, bushing 12 will be locked in the hole 15 and the pins 13 and 13*L of the spoke 2 will be securely held between the flanges 17 and 18. The disk 11 can be secured in that position by a set screw 22, Fi s. 1 and 3.

{aving thus fully described our invention, we claim:

1. A spring wheel comprising a resilient rim, a hub and a series of oppositel curved resilient spokes pivotally connectedI to said rim and hub, each of said resilient spokes formed from a flat strip of spring metal, and said fiat strips of spring metal having edges thicker than the middle portion of said Hat strips of springr metal, each spoke forms curves extending alternately in opposite directions, and said curves being of such a shape, that every said spoke, in the assembled wheel, touches adjacent spokes in three places, in said three places said spokes being fastened together.

2. A wheel of the character described comprising a resilient rim, a hub and a series of resilient spokes, said spokes having their edoes thicker than the middle portion; said spores, have pivotal connection to said hub and rim by means of pins, said pins being welded to each end of said spokes, and on the inner end of said spokes, said pins provided with shoulders projecting on each side of said spokes.

3. A wheel of the character described comprising a resilient rim, a two anged hub, and series of resilient, oppositely curved s okes, said spokes being pivotally connecte to said hub b the means of pins, and said two flanges o said hub having a series of holes to receive said pins of said spokes; half of said holes being of the same diameter as diameter of said pins to be engaged, the diameter of the other half of said holes being larger than the diameter of said pins, and in lsaid holes with a larger diameter being provided bushings, said bushings having outside diameter to tit said large holes of said llange and said bushings have inside diameter to t said pins of said spokes.

P. DE BOGORY. A. DE BOGORY.

Witnesses:

A. A. Bocos, ELLEN O. ANDERSON. 

